Pliers



@et 2 H923.,

E. A. KAUFFMAN.

PLIERS Filed oct; '25 1922 Patented Oct. 2, 1923.

UNITED STATES ELIAS AUGUST KAUFFMAN, 0F CHICAGO, ILLINOIS. i

ILIERS.

l Application tiled October 25, 1922. Serial No. 596,782.

To all whom t may concern.'

Be it known that I, ELIAS AUGUST KAUFE- MAN, a former subject of theEmperor of German who has forsworn his allegiance to the mperor ofGermany 'and declared his intention of becoming a citizen of the UnitedStates, and therefore is not now a citizen or subject of any country,and is a resident of the city of Chicago, county of Cook, and State ofIllinois, have invented certain new and useful Improvements in Pliers,of which the following is a specification.

This invention relates l'fo pliers, and has for its object the provisionof a device of this character having a compound leverage connectionbetween the Shanks and jaws thereof which greatly enhances the effectivepower of the device.

Another object of the invention is to provide connections between thepivots of the levers so that if one or the other of the jaws shouldbecome broken or otherwise unfit for use, such jaw may be removed fromthe pliers and another jaw substituted therefor.

Other objects will appear hereinafter.

The invention consists in the combination and arrangements of partshereinafter described and claimed.

The invention will be best understood by reference to the accompanyingdrawings forming a part of this specification, and 1n which,

Fig. 1 is a plan view of the invention;

Fig. 2 is a side elevation of the invention;

Fig. 3 is a sectional view of the invention on the line 3 3 of Fig. 1;and

Fig. 4 is a plan view ofthe invention, showing same in open position.

Referring to the drawings, 10 and 11 represent the shanksor handles ofthe pliers, each of which has its inner end broadened, ,the shank 10preferably being provided with forked ears 12 and 13, and the shank 11being provided with tongues 14 and 15. The tongue 14 is adapted tonicely engage between the ears 12, there being a rivet 16 extendingthrough said ears and said tongue so as to pivotally connect the shanks10 and 11 together.

Jaws 17 and 1:8 are provided, the jaw 17 preferably having tongues 19and 20, and the jaw 18 having ears 21 and 22. Tongue 20 is adapted tofit nicely between the ears 22 of the jaw 18 and is pivotally` held inposition by vmeans of a rivet 22', which pivotally connects the jaws 17and 18 together. The cars 21 of the jaw 18 are adapted to snugly receivethe tongue 15 on the shank 11, being 'pivotally connected together by arivet 23, and the ears 13 of the shank 10 are adapted to receive thetongue 19 therebetween, rivet 24 pivotally connect ing said memberstogether. The jaws 17 and 18 may be provided with cutting blades 25 asshown, if desired.

The pivotal connections described are of the tongue and fork or tongueand groove type, and are particularly useful in the present instance asthey prevent lateral movement of the parts with respect to each other.

It will also be noticed that the above described arrangement is suchthat the pivots 16, 22, 23 and 24 are all located equidistant from acommon central point, thereby obtaining the maximum leverage withoutaltering the conformation of the pliers. An important feature oftheinvention lies in the fact that if the jaws 17 and 18 should becomebroken or otherwise damaged or unfit for use, the same may be removedfrom the pliers by taking out the rivets, and a similar jaw substitutedtherefor, it being my purpose to provide a large number of similarinterchangeable Shanks and jaws which may be employed without disturbingthe effectIve operative arrangement of the device.

Pliers made in accordance with my invention are extremely simple andparticularly efficient in ope-ration, and are capable of economicalmanufacture in large quantities.

.While I have illustrated and described. the preferred form ofconstruction for carrying my invention into effect, this is capable ofvariation and modification without departing from the spirit of theinvention. I, therefore do not wish to be limited to the precise detailsof construction set forth, but desire to avail myself of such variationsand modifications as come within the Scope of the appended claims.

Having described my invention, what I claim as new 'and desire to secureby Letters Patent, is:

1. Pliers of the character described including shank portions disposedside by side, said shank portions being provided with oppositelydisposedbroadened inner ends of the same character, there being meansfor pivoting the adjacent portions of said broadened ends together; jawsdisposed side by side and having oppositely disposed broadened innerends of the saine character as said shanks, there being means forpivotally connecting the adjacent portions of said jaws together, andfor piv0tally connecting the adjacent portions of the inner ends of saidjaws and said shanks.

2. Pliers ol" the character described including shank portions disposedside by side, said Shanks being provided with oppositely disposedbroadened inner ends of the same character; spaced fork members on thebroadened end of one of said shank members; spaced tongues on thebroadened end of the other of said shank members; means for pivot-allyconnecting the adjacent tongue and fork members of said Shanks; jawsdisposed side by side and having oppositely disposed inner ends of thesaine character as said Shanks, portion of one of said jaws beingprovided with spaced ,fork members and the other of said jaws beingprovided with spaced tongue members, the adjacent tongue and forkmembers of said jaws being pivotally the broadened connected together,and the adjacent tongue and fork members of said jaws and said shanksbeing pivotally connected together.

3. Pliers of the eharacterdescribed comprising a shank having spacedforked members thereon; a second shank having spaced tongues thereon,one of which is adapted to engage one of said forked members; a'jawhaving tongues thereon, one of which is adapted to engage the adjacentforked member on said first mentioned shank; and another jaw memberhaving spaced forked members thereon adapted to engage the ren'iainingtongue of Said shank member, and the remaining tongue of the related jawmember, all of said tongues and forks being pivotally connectedtogether. I

VIn testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

ELIAS AUGUST KAUFFMAN.

Witnesses:

JOSHUA R. H. Porrs, FREDA C. APPLETON.

